Have you reduce the max file size for download? If it is left at default (unlimited) that could be your problem. I recently implemented this and it drastically reduced the bandwidth. The following is from tech entrance

» Limiting bandwidth

If you are using PHProxy script then you can activiate bandwidth limiting option to make control of your bandwidth and avoid having someone downloading big 700MB movies through your proxy and exausting your bandwidth and forcing your proxy to go down.

In the index.php file search for

'max_file_size' => -1,

This means file size is unlimited

Now writing number in this value will limit the max file size that can be downloaded through your proxy site

I will show examples of the values you can put in this line

This value is written in Bytes so 1mb = 1 * 1024 * 1024

1 MB

'max_file_size' => 1048576,



5 MB (Recommended)


'max_file_size' => 5242880,